LAST EDITED ON Jun-18-08 AT 04:22 AM (PST)
 
Oh, one more thing:

Don't worry about the hub concept, at least not how you stated it. I'd keep each niche to itself. It helps keep you focused on the one task. Also, if that were your money site, and your host went down for an extended period of time, you wouldn't be making any money from it. I'd keep each niche gold site on its own separate hosting account at different ISPs, just so they all won't be down at once.

Re. the hub idea: If you had the domain, for example, ScubaDivingCozumel.com, and you wanted to make related subdomains for that:

equipment.scubadivingcozumel.com
accomodations.scubadivingcozumel.com
air-travel.scubadivingcozumel.com
cruises.scubadivingcozumel.com
dive-shops.scubadivingcozumel.com

I think that would be OK. But I wouldn't try to make an all-things-to-all-people site like about.com for the reasons above.

Remember, the RSS items in Blogbomb won't be linking back to the site where Blogbomb is installed. Instead, they will be linking to your other sites/pages. So you could install Blogbomb to some-old-domain-that-no-one-will-ever-see.com, and that would be no problem.

Forget RSS "news" from Yahoo, etc. You are by and large going to make your own RSS feeds to put in Blogbomb, with descriptions & keywords you want, linking to pages you want. So Blogbomb will act more as a database & central repository of links to all your pages & sites. As Kurt mentioned, you will then have one central place from which to manage all your inbound links to all your sites, without having to go update Squidoo, Hubpages, etc., every time you add a new site!

Also, I wouldn't bother too much with things like interactivity, local site search, gizmos of that sort, on your gold or any other of your sites. My experience has been (and it may be different for others), that so few visitors use them that they're not worth the extra time & effort to add. Kind of the old 80/20 rule, except it's more like 95/5 - don't bother with site gizmos that would impress the 5%. Instead, get as many of the other 95% as possible to click on your affiliate and other monetization links. The one exception would be if you wanted to add links to related "canned" Fatbomb searches, and/or a search box that would lead to results on a domain where Fatbomb is installed. For example, on a scuba in Cozumel site, link to "scuba diving in Cancun", "more to see in the Yucatan peninsula", etc. Those links would lead to a Fatbomb search, and ideally, the results would be all either your own sites or monetization sources.

Jeff